Disruption of identity characterized by two or more distinct personality states, which may be described in some cultures as an experience of possession. The disruption in identity involves marked discontinuity in sense of self and sense of agency, accompanied by related alterations in affect, behavior, consciousness, memory, perception, cognition, and/or sensory-motor functioning.

300.14* Hysterical neurosis, dissociative type*In the dissociative type, alterations may occur in the patient's state of consciousness or in his identity, to produce such symptoms as amnesia, somnambulism, fugue, and multiple personality.

Dissociation is characterized by a disruption of usually integrated functions of memory, consciousness, identity, or perception of the environment.

the essential feature of the Dissociative Disorders is a disruption in the usually integrated functions of consciousness, memory, identity,or perception